110 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 122 



slender, and tapering) . Much of the overlap in relative cirri lengths 

 of E. chiostictus with E. nigricans, for example, as indicated in table 

 4, is the result of measurements based on Gulf of California specimens. 



Nomenclature. — Entomacrodus cruentatus Garman is an ophio- 

 blennius larval stage approximately 16 mm SL. The specimen is 

 now in poor condition but stUl exhibits some of the posterolaterally 

 directed canines in the lower jaw. The dorsal fin formula is XIII, 15, 

 the pectoral rays number 14. The only salarine blenniid in the 

 eastern Pacific with this combination of counts is E. chiostictus. 

 Garman did not compare his species with any other. Salarichthys 

 vanderbilti Fowler is the normal adult of E. chiostictus. Fowler 

 compared his species only with the Altantic E. textilis. The published 

 description gives the type-locality of S. vanderbilti as Death River 

 tide pools at the foot of Mt. Sapo, Panama. The label in the bottle 

 with the holotype states only "Tidepools off Playa Muerto, Panama." 

 Both the published description and the label give the date of collection 

 as Apr. 16, 1941. 



The syntypic material of Salarias chiostictus consists of two speci- 

 mens, both females, USNM 28117. I here designate one of these 

 specimens lectotype. The lectotype retains the orginial catalog 

 number. The paralectotype is recataloged USNM 200284. The 

 lectotype, 43.2 mm SL, has D. XIII, 15, A. II,16S, and two pairs of 

 pores included in the preopercular series. The paralectotype, 46.2 

 mm SL, has D. XIII, 14, A. II,16N, and all preopercular pores simple. 



Relationships. — E. chiostictus is a member of the E. nigricans 

 species group. E. chiostictus differs from aU the Atlantic species of 

 the genus (and species group) in having a longer supraorbital cirrus 

 and more lip stripes, as well as by having a much higher percentage 

 of specimens with pore pairs mcluded in the preopercular series. It 

 differs from most populations of E. caudofasciatus in lacking a humeral 

 blotch, usually having more lip stripes, and a much higher percentage 

 of specimens with paired pores in the preopercular series. It differs 

 from most specimens of E. sealei in having a different type color 

 pattern on the upper lip and in usually not having as many as three 

 pore pairs included in the preopercular series. It differs from E. 

 corneliae in lacking a pair of dark vertical stripes on the head behind 

 the eye and m rarely having as many as four or five pore pairs mcluded 

 in the preopercular series. 



The members of the E. nigricans group are closely interrelated and 

 some investigators might consider them merely populations of one 

 species; however, this interpretation is in part excluded by the fact 

 that two western Pacific forms {E. sealei and E. caudofasciatus) occur 

 together and are alwaj's readily distinguishable (the third western 

 Pacific form, E. corneliae, is endemic to the Marquesas, where no 



